/*
 * Copyright (c) 2011-2018, Meituan Dianping. All Rights Reserved.
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.dianping.zebra.group.router;

import com.dianping.zebra.group.config.datasource.entity.GroupDataSourceConfig;

public class LocalContextReadWriteStrategy implements ReadWriteStrategy {

	private static InheritableThreadLocal<Boolean> forceMaster = new InheritableThreadLocal<Boolean>();

	@Override
	public boolean shouldReadFromMaster() {
		return getReadFromMaster();
	}

	public static boolean getReadFromMaster() {
		Boolean shouldReadFromMaster = forceMaster.get();

		if (shouldReadFromMaster == null || !shouldReadFromMaster) {
			return false;
		} else {
			return true;
		}
	}

	protected static void setReadFromMaster() {
		forceMaster.set(true);
	}

	protected static void clearContext() {
		forceMaster.remove();
	}

	@Override
	public void setGroupDataSourceConfig(GroupDataSourceConfig config) {
	}
}
